Device for marking flat surfaces of articles

ABSTRACT

A marking tool is secured on a longitudinally swivelling lever which is connected with a reciprocating slide. In the slide, on its side facing the lever a longitudinal slot is made to locate therein the article to be marked. Mounted on said lever is a roller which interacts with a templet bar immovably fixed on the housing of the device to cause marking of an article.

I UllltEd States Patent [111 3,731,619 Petrikovsky 1 May 8, 1973 54] DEVICE FOR MARKING FLAT 2,237,582 4/1941 Smith ..1o1 1o SURFACES 0 ARTICLES 2,547,602 4/1951 Schmitt ..10l/l1 X [76] Inventor: Efim Lvovich Petrikovsky, Prospekt primary Em'miner Ro bert p lf imelli Lenlna, Assistam ExaminerCliff0rd D. Crowder lyabll'lsk, Attorney-Eric H. Waters et al.

[22] Filed: Dec. 23, 1971 [57] ABSTRACT 21 A 1. N 211 392 1 pp 0 A marking tool is secured on a longitudinally swivelling lever which is connected with a reciprocat- [52] US. Cl ..l0l/4, 101/44 ing slide, In the slide, on its side facing the lever a lon- [51] Int. Cl. .Q ..B4lf 17/36 gitudinal slot is made to locate therein the article to be [58] Field of Search ..10l/4, 9-11, marked. Mounted on said lever is a roller which in- 101/35, 44, 43, 41, 42, 291 298 teracts with a templet bar immovably fixed on the housing of the device to cause marking of an article.

[56] References Cited I 1 Claim, 3 Drawing Figures UNITED STATES PATENTS 811,071 1/1906 Liberman ..10l/10 I l///////////// I //"/l l PATENTED W SHEET 1 [IF 2 FIE. I

PATYENTEDHAYA 81915 3,731 619 SHEET 2 [IF 2 DEVICE FOR MARKING FLAT SURFACES OF ARTICLES The invention relates to devices for marking flat surfaces of various articles preferably having a generally cylindrical form, by the method of pressing.

Widely known in the art are impact marking devices employed with presses. In these, the job is fed into the workin g zone and located there, an impact being struck against its flat surface by the marking tool fixed in the press slide.

Such devices have disadvantages consisting in that the jobs are manually charged and discharged, and the marking signs are not accurately enough oriented with respect to the article. Besides, the marking tool is kept a very short time in contact with the job, thus the imprint being insufi'iciently clear.

Also known is a device to mark bearing races. The device is mounted on the press table, and is fitted with a loading arrangement in the form of a horizontally disposed belt conveyer feeding the race into the working zone of the press, and a pusher which reciprocates to discharge the articles piece by piece, and at the same time press them up to a guide and a locking device. The pusher has a bevelled working surface for automatic ejection of the marked article as it is being pressed by the next job. The marking tool is fixed in the press slide whose movement is interlocked with those of the conveyer and the pusher.

The disadvantages of the present device consist in the complex design of the mechanism to feed and eject the jobs, which reduces its operating reliability and the rate of production.

An object of the invention is to provide a device, that features high accuracy of orientation of the marking signs.

One more object of the invention is to provide a device, wherein the job in charged, marked and discharged in an automatic cycle within one working stroke of the slide.

With the said and'other object in view, in a device to mark flat surface of articles, wherein the marking tool is mounted on a reciprocating slide, according to the invention, the marking tool is connected with the slide through a longitudinally swivelling lever disposed along the slide, while the slide has on its side facing the lever a longitudinal slot to locate the job therein, and a roller is mounted on said lever to interact with a templet bar which has a projection on its surface portion rolled over by the roller, and is immovably fixed on the frame of the device.

The present invention is advantageous in that the concurrence of the processes of marking and conveying the job allows the design of the device to be simplified, the marking process being completely automated. Mounting the marking tool on the slide through a longitudinally swivelling lever interacting with an immovable templet bar, provides for the job being charged, marked, and discharged within one working stroke of the slide. While the roller rolls over the horizontal surface of the projection of the templet bar, the marking tool is kept in contact with the job under pressure, which ensures high quality of the imprint.

Given below is a detailed description of the present device with reference to the appended drawings, wherein:

FIG. 1 is a general side view of the device;

FIG. 2 is a longitudinal section FIG. 1;

FIG. 3 is a view along arrow Bin FIG. 1.

The device comprises a housing 1 (FIGS. 1,2) having a slot guide limited by straps 2, wherein a slide 3 reciprocates.

In the construction of the device disclosed herein the slide 3 is moved by a drive made in the form of a power cylinder 4. Employed as the drive can, of course, be other mechanisms as well, such as a crank or a link gear moved by an electric motor through a reduction gear.

Secured on housing 1 (FIG. 3) is a plate 5 serving as a limiting guide for job 6 in the process of marking. Located on top of housing 1 is a loading arrangement 7 made in the form of a chute. At the bottom of housing 1 there is mounted a chute 8 wherethrough the marked articles 6 are discharged.

A locking device 9 made in the form of a swivel level along line lI-llin has a beveled working surface which during the movement of the job provides for its accurate orientation with respect to slide 3.

Slide 3 is fitted with a feeder 10 in whose front part there is provided a longitudinal slot to locate therein the job to be marked. Feeder 10 serves simultaneously as a shutter for piece feeding of jobs 6 from the loading arrangement 7, a pusher, and a job locking device in the process of marking.

Besides, an axle 11 connects slide 3 with a longitudinally 5 swivelling lever 12 secured thereon, and reciprocating together therewith. Lever 12 is fitted with a roller 13. Disposed in the working part of lever 12 facing feeder 10 are sprung clamps 14 for job 6, and the marking tool 15. By means of a spring 16 lever 12 is pressed against a templet bar 17 which has a projection, and is irnmovably fixed on columns 18 and a cross-piece 19 in housing 1 of the device.

The skewed face of ejector 20 helps to drop the marked articles into chute 8.

In the present embodiment of the device the guides of housing 1 are made inclined (FIG.1), but they can as I well be made vertical.

The device operates as follows.

Jobs 6 are placed into the loading arrangement 7 made as a chute. The lowermost job rolls into the slot of feeder 10 until contacting plate 5. The power cylinder 4 starts moving slide 3. The edge of the slot of feeder l0 presses against the job and moves it, the latter on contacting the beveled surface of the lowermounted locking device 9 being finally locked and pressed to the edge of the slot of feeder l0 and to plate 5. When the job is approximately in the center of the inclined working face of locking device 9, roller 13 of lever 12 comes across the projection of the templet bar 17, so that lever 12 swivelling somewhat about axle l 1 forces the job by clamps 14 against the locating surface of the feeder. With further movement of roller 13 along the templet bar 17, the marking tool is gradually pressed into the flat surface of job 6. For some time the marking tool 15 remains in contact with job 6, since roller 13 rolls along the horizontal section of the projection. This provides for high quality of the imprint.

Moving further the roller comes off the projection of the templet bar 17, lever 12 being pressed off the feeder by spring 16. The marking tool 15 with clamps 14 are thus moved away from the job. With further movement of slide 3, the articles roll under their 0 gravity into chute 8.

After the article is dropped slide 3 starts moving back. The next job can get into the feeder slot from the loading arrangement 7 only in the extreme initial position of slide 3 (FIGS. 2,3) when the opening of the loading arrangement 7 is let free. During the working stroke of slide 3 the upper plane of feeder l shuts off the opening of the loading arrangement 7, thus separating one article only.

Adjustment for the depth of marking is done by set screws (not shown in the drawings).

I claim:

1. A device for marking flat surfaces of articles, comprising: a housing a slide capable of reciprocatory movement within said housing; a drive for reciprocating said slide; a lever pivotally mounted on said slide and extending longitudinally therealong; a marking tool mounted on said lever; a longitudinal slot made in said slide on the side thereof facing said lever for receiving an article to be marked; a roller mounted on said lever for receiving an article to be marked; a templet bar immovably fixed on said housing, said templet bar having a projection on its surface for engagement by said roller; means to normally bias said lever toward said templet bar, whereby upon reciprocation of said slide said roller engages said projection to force said marking tool against said article. 

1. A device for marking flat surfaces of aRticles, comprising: a housing a slide capable of reciprocatory movement within said housing; a drive for reciprocating said slide; a lever pivotally mounted on said slide and extending longitudinally therealong; a marking tool mounted on said lever; a longitudinal slot made in said slide on the side thereof facing said lever for receiving an article to be marked; a roller mounted on said lever for receiving an article to be marked; a templet bar immovably fixed on said housing, said templet bar having a projection on its surface for engagement by said roller; means to normally bias said lever toward said templet bar, whereby upon reciprocation of said slide said roller engages said projection to force said marking tool against said article. 